{"data":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"4606259","name":"Excelsior Ridge Surface"},"operator":{"type":"operator","id":"P11498","name":"Coal Corp Of America Inc"},"controller":{"type":"controller","id":"C08412","name":"Campbell Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01101","name":"Beasley Industries Inc"},"object":{"type":"mine","id":"4606259","name":"Excelsior Ridge Surface"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606259|C01101|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01300","name":"Peaker Run Coal Company Inc"},"object":{"type":"mine","id":"4606259","name":"Excelsior Ridge Surface"},"validFrom":"1980-12-01","validTo":"1983-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606259|P01300|1980-12-01|1983-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01101","name":"Beasley Industries Inc"},"object":{"type":"operator","id":"P01300","name":"Peaker Run Coal Company Inc"},"validFrom":"1980-12-01","validTo":"1983-09-30","current":false,"derived":true,"evidenceMineId":"4606259","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606259|P01300|1980-12-01|C01101|1950-01-01|52278"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08412","name":"Campbell Resources Inc"},"object":{"type":"mine","id":"4606259","name":"Excelsior Ridge Surface"},"validFrom":"1981-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606259|C08412|1981-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11498","name":"Coal Corp Of America Inc"},"object":{"type":"mine","id":"4606259","name":"Excelsior Ridge Surface"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606259|P11498|1983-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08412","name":"Campbell Resources Inc"},"object":{"type":"operator","id":"P11498","name":"Coal Corp Of America Inc"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4606259","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606259|P11498|1983-10-01|C08412|1981-02-01|77240"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4606259","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}